According to the Busan Sasang Police Department on July 18, Yoon Cheol Jong is under investigation for smoking marijuana at a friend Kwak's house in July of 2016. Meanwhile, Kwak is under investigation for using, as well as growing marijuana at his home.
Various media outlets claimed that Yoon Cheol Jong is also accused of growing marijuana, however, the police clarified that Yoon Cheol Jong did not engage in growing but solely in using the drug.
The police stated, "Yoon Cheol Jong was summoned for an investigation back on May 11. He submissively confessed his crime."
Earlier this month, Yoon Cheol Jong surprised fans by announcing his sudden departure from 10cm. Many netizens believe the current investigation on his marijuana use is the cause of his departure.